> ## Knowledge Base Index
> Fetch the complete knowledge base index at: https://help.yanet.io/sitemap.xml
> Use this file to discover available pages before exploring further.
> Pure-Markdown content can be obtained by appending a '.md' suffix to the content URLs listed in the sitemap (without the trailing slash).

# SKU Generation Issues

### Problem
The generated SKU is incorrect, missing, duplicated, or does not follow the format you expected.

###### Check 1 — Check SKU settings
Go to:
**Settings → SKU**
Review your SKU generation settings, including:
* Prefix
* Suffix
* Data abbreviation
* Variant-related options
![](https://storage.crisp.chat/users/helpdesk/website/-/3/7/f/d/37fde77105fa8400/image_2zt2sc.png)

###### Check 2 — Check the product information
Go to **Generate & Print** and select the affected product.
Make sure the product and variant information required by your SKU structure is available.
![](https://storage.crisp.chat/users/helpdesk/website/-/3/7/f/d/37fde77105fa8400/image_jl8ls1.png)

###### Check 3 — Check existing SKUs
Open the product in **Shopify Admin → Products**.
Check whether the product or variant already has a SKU.

| **Note:** If you are generating new SKUs, review existing SKU values first to avoid unwanted changes.

###### Check 4 — Test with one product
Generate a SKU for one product first.
Check whether the result follows your expected structure.

### Result
If the test SKU is correct, you can continue with the remaining products.